diff --git a/packages/core/src/flate.js b/packages/core/src/flate.js
new file mode 100644
index 0000000..9ff314a
--- /dev/null
+++ b/packages/core/src/flate.js
@@ -0,0 +1,11 @@
+import {deflateSync, inflateSync} from 'zlib';
+
+export function inflate(buffer) {
+  return inflateSync(buffer);
+}
+
+export function deflate(buffer) {
+  return deflateSync(buffer, {
+    level: 9,
+  });
+}
diff --git a/packages/core/src/index.js b/packages/core/src/index.js
index 69cca84..e89e81a 100644
--- a/packages/core/src/index.js
+++ b/packages/core/src/index.js
@@ -1,15 +1,11 @@
 export {
   default as fastApply,
 } from './fast-apply';
+export * from './flate';
 export {
   default as mapValuesAsync,
 } from './map-values-async';
-export {
-  mergeDiff,
-  mergeDiffArray,
-  mergeDiffObject,
-  mergeDiffPrimitive,
-} from './merge-diff';
+export * from './merge-diff';
 export {
   default as Property,
 } from './property';
diff --git a/packages/topdown/src/resources/tiles.js b/packages/topdown/src/resources/tiles.js
index 678e1c9..aeabbfa 100644
--- a/packages/topdown/src/resources/tiles.js
+++ b/packages/topdown/src/resources/tiles.js
@@ -1,3 +1,4 @@
+import {deflate, inflate} from '@avocado/core';
 import {Atlas} from '@avocado/graphics';
 import {
   floodwalk2D,
@@ -7,23 +8,7 @@ import {
 } from '@avocado/math';
 import {JsonResource} from '@avocado/resource';
 import {Synchronized} from '@avocado/s13n';
-import {
-  compose,
-  // deflate,
-  EventEmitter,
-  // inflate,
-} from '@flecks/core';
-import {deflateSync, inflateSync} from 'zlib';
-
-export function inflate(buffer) {
-  return inflateSync(buffer);
-}
-
-export function deflate(buffer) {
-  return deflateSync(buffer, {
-    level: 9,
-  });
-}
+import {compose, EventEmitter} from '@flecks/core';
 
 // TODO: rows, with nulls